A conceptional approach of resin-transfer-molding to rosin-sourced epoxy matrix green composites†

Yu, Sicong, Zhang, Xufeng, Liu, Xiaoling, Rudd, Chris, and Yi, Xiaosu (2021) A conceptional approach of resin-transfer-molding to rosin-sourced epoxy matrix green composites†. Aerospace, 8 (1). 5.

[img]
Preview
PDF (Published Version) - Published Version
Available under License Creative Commons Attribution.

Download (1MB) | Preview
View at Publisher Website: https://doi.org/10.3390/aerospace8010005
 
32


Abstract

In this concept-proof study, a preform-based RTM (Resin Transfer Molding) process is presented that is characterized by first pre-loading the solid curing agent onto the preform, and then injecting the liquid nonreactive resin with an intrinsically low viscosity into the mold to infiltrate and wet the pre-loaded preform. The separation of resin and hardener helped to process inherently high viscosity resins in a convenient way. Rosin-sourced, anhydrite-cured epoxies that would normally be regarded as unsuited to liquid composite molding, were thus processed. Rheological tests revealed that by separating the anhydrite curing agent from a formulated RTM resin system, the remaining epoxy liquid had its flowtime extended. C-scan and glass transition temperature tests showed that the preform pre-loaded with anhydrite was fully infiltrated and wetted by the liquid epoxy, and the two components were diffused and dissolved with each other, and finally, well reacted and cured. Composite laminates made via this approach exhibited roughly comparable quality and mechanical properties with prepreg controls via autoclave or compression molding, respectively. These findings were verified for both carbon and ramie fiber composites.

Item ID: 73834
Item Type: Article (Research - C1)
ISSN: 2226-4310
Keywords: Carbon fiber composite, Epoxy, In-plane mechanical properties, LCM process, Ramie fiber composite, Rosin-sourced anhydrite, Viscosity
Copyright Information: © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the CreativeCommonsAttribution (CCBY) license (https://creativecommons.org/licenses/by/4.0/).
Date Deposited: 12 May 2022 02:00
Downloads: Total: 32
Last 12 Months: 32
More Statistics

Actions (Repository Staff Only)

Item Control Page Item Control Page